Syracuse, N.Y. -- In August 2012, Arthur Hennessy arranged for 200 pounds of marijuana to be placed on an Old Dominion Freight Line truck in California set to drive across the country.

The destination? STX Transportation Services in Syracuse, where Hennessy picked up the shipment when it arrived. Hennessy then took the marijuana and sold it to drug dealers in Syracuse, he admitted in federal court documents.

About a month later, Hennessy again had fellow members of his drug ring place crates full of marijuana on trucks leaving Moorpark, Calif. This time, however, federal agents knew what was happening. They stopped the truck in North Carolina on Sept. 26, 2012, found 300 pounds of marijuana and arrested Hennessy.

Now, Hennessy faces at least 120 months in prison after admitting on Aug. 6. to planning to sell more than 100 kilograms -- or about 220 pounds -- of marijuana. He was charged with conspiracy with intent to distribute a controlled substance.

Hennessy is scheduled to be sentenced on Sept. 9.

Federal court documents do not list the other members of Hennessy's drug ring or say where Hennessy lives. A call to STX Transportation Services was not returned.

Hennessy was previously convicted on July 20, 1995, of conspiracy to possess with intent to distribute cocaine and 100 kilograms or more of marijuana. He was sentenced to 87 months in prison.